Carbureter.



F. BALASSA.

' CARBURETER.

APPLICATION FILED FEB.2I, I914.

1 1 1 ,989. Patented Aug. 31, 1915.

I 2 SHEETS-SHEET I.

F. BALASSA.

CARBURETER.

APPLICATION FILED FEB, 21. 1914.

Patented Aug. 31, 1915.

2 SHEETS-SHEET 2.

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menace.

T all whom it may concern:

Be it known that l, Fnmmuon Bamssa, of Budapest, Austriaillungary, a sub ect of the Kingof Hungary, and whose post-office address is Rezsii 'tr No. 1, Budapest, X, Kingdom of Hungary, Austria-Hungary,

have invented new and useful Improvements in Carburetors for lnt'ernal-Combustion Engines, of which the following is a specification.

This invention relates to spray carburetor for internal combustion engines and has for its object to construct an improved carbureter of this type in which the nozzle consists of a pipe with a row of fine jets or perforations lying close together, arranged at an angle in the direction of the throttle valve which is located in a correspondingly broad horizontal air suction channel attached to thevalve box at the valve height. By this construction the drawn-in fuel is sprayed and dispersed in the direction of the throttle valve in a row of jets close together and is also drawn in a straight direction in the valve chamber.

A11 important advantage of the improved carburetor is that in spite of its great simplicity, inasmuch as every air nozzle is omitted as well as the complicated concentric arrangement of air nozzles and fuel nozzles with the accompanying dificulty of adjustment and necessity of renewal for the different cylinders, an exceedingly advantageous capacity for operation is the result.

A special feature is that in the improved device the finely divided fuel is directly drawn along a straight passage in the valve chamber, which is of special importance for starting and speeding u the engine.

Up to the present ti e with the types of spray carburetor held to be most reliable an aspirator is regularly necessary for the fuel with a twisted outward passage, and this makes the ouick speeding up of the engine, especially in cold Weather, very difficult so ;that with each spray carburetor a special starting atomizer is provided or where this is not the case, still a special bcnzin starting switch is needed close to the carbureter on a benzin motor. This drawback does not exist with the carburetor of the present invention because the turning of the motor is suificient, on account of the horizontal direction of the straight passage and in con- Specification of Letters Patent.

censuses-inn.

Patented Aug. 331, 1915.

Application filed February 21, 1914;. Serial No. 820,233.

junction with the special formation of the broad nozzle, in order to bring the necessary mixture into the fuel chamber for speeding up without further diiliculty. In operation also,in spite of the omission of a special air nozzle which must be changed for engines with a difi'erent normal number of revolutions, the present invention proves exceedingly economical and suitable, and in particular renders unnecessary the troublesome work of changing and mutually adjusting the fuel nozzle and air inlet.

The accompanying drawing shows, by way of example, one method of carrying out the invention.

Figure 1 is a section on the broken lines ABC-D of Fig. 2; Fig. Qshows an end view of the carburetor, and Fig. 3 shows the air inlet valve.

T518 fuel container at with iioat b may be of any suitable construction. The fuel which is kept in the container at a constant level, indicated at c, is admitted into a lateral hranch pipe (Z with the usual needle valve e. According to the invention the casing f is secured to a branch pipe d and as shown, has a rectarfgular cross section. In said casing, a throttle valve; 9 is journaled by means of a shaft which carries a lever it connected to the governor rod.

Under the throttle valve and raised a little the nozzle pipe 2' is fixed and secured by a nut j. The nozzle pipe has a number of line nozzles or perforations is arranged side by side and as shown in Fig. 2 in a direction inclined to the throttle valve. Said throttle valve is movable from its inclined position in which it closes the channel through casing f to a position in which it fully opens said channel. The axes of the 'inlets 7c are substantially perpendicular to said valve when the latter is in a position valve 39 which can be of any suit'aole con-.

struction leads into the suction passage. It is, however, essential that this secondary air valveis located behind the throttle valve, that is to say nearer to the engine inlet valve as shown in Fig. 2, so that even when the throttle valve is quite closed a constant supply of fresh spare air can be admitted through the secondary air valve into the cylinder. During the suction stroke the fuel in a row of fine jets is caused to impinge more or less directly against the throttle valve in accordance with the inclination of said valve and is finely dispersed or atomized in an exceedingly effective way. Owing to the slope of the throttle valve toward the horizontal floor of the suction passage a nozzle-like operation results so that the sprayed mixture is drawn directly into the valve chamber byqa short strai ht passa When the throttle valve is close asalrea y stated, fresh air is drawn through the secondary valve for the scavenging the residual gas in order to prevent undesired repeated explosions in the cylinder.

What I claim is l 1. In a carbureter, the combination of a casing provided with an air suction channel which is relatively broad in comparison to its depth, fuel inlets arranged in a series transversely of said channel, and a butterfly valve arranged in said channel on an axis extending transverse thereto, said valve bemg arranged to intercept the fuel from said inlets and constituting a wall movable to:

ward and away from Said inlets.

2. In a carbureter, the combination of a casing provided with an air suction channel fuel inlets arranged in a series transversely of said channel, and a butterfly valve movable on an axis extending transverse to said channel into full open and closed positions and constituting a wall movable toward and away from said inlets, said inlets being arranged in a position perpendicular to the plane of said valve when the latter is in its middle position.

3. In a carbureter, the combination of a casing provided with an air suction channel which is relatively broad in comparison to its depth, fuel inlets arranged in a series transversely of said channel, and a butterfly valve arranged in said channel on an axis extending transverse thereto, said valve being arranged to intercept the fuel from said inlets and constituting a wall movable toward andaway from said inlets, said inlets being inclined inwardly toward said butterfly "alve.

4.-'In a carbureter, the combination of a casing provided with an air suction channel which is' relatively broad in comparison to its depth, fuel inlets arranged in a series transversely of said channel, and a butterfly valve arranged in said channel on an axis extending transverse thereto, said valve being arranged to intercept the fuel from said inlets and constituting a wall movable toward and away from said inlets, said inlets being arranged in a position perpendicular to th-.- planeof said valve when the latter is in its middle position.

5. In a carbureter for internal combustion engines, the combination with a valve casing having a horizontal passage therein, a tubular passage extending-transversely of said passage and there-below, said tubular passage being provided with inlet openings presented upwardly into the first said passage, a butterfly valve journaled on an axis parallel to said tubular passage, an air inlet valve at one end of the first mentioned passage and on the same side of the butterfly valve as said inlet openings thereinto.

6. In a carbureter for internal combustion engines, the combination with a valve casing having a horizontal passage therein, a tubular passage extending transversely of said passage and therebelow, said tubular passage being provided with inlet openings presented upwardly into the first said passage, a butterfly 'valve journaled on-an axis parallel to said tubular passage, an air inlet valve at one end of the first mentioned passage and on the same side of the butterfly valve as said inlet openings thereinto, said valve casing being provided with a secondary air inlet valve communicating with the first mentioned passage on the opposite side of said butterfly valve from said inlet 0penings.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

FRIEDRICH BALASSA.

Witnesses GEORGE RoLvnn, WOLDEMAR HAUPT. 

